Home / 123,705.18-170,713.16-67,116.56

Finding the Fourth Proportional to 123,705.18, 170,713.16 and 67,116.56

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Solution

The fourth proportional to 123,705.18, 170,713.16 and 67,116.56 is: 92,620.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,705.18 : 170,713.16 = 67,116.56 : x
  2. Step 2: Convert to fraction form
    123,705.18/170,713.16 = 67,116.56/x
  3. Step 3: Cross multiply
    123,705.18x = 170,713.16 × 67,116.56
  4. Step 4: Simplify right side
    123,705.18x = 11,457,680,045.93
  5. Step 5: Solve for x
    x = 11,457,680,045.93/123,705.18
  6. Step 6: Final answer
    x = 92,620.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.